70067920 has 80 divisors (see below), whose sum is σ = 177644880. Its totient is φ = 25546752.

The previous prime is 70067917. The next prime is 70067927. The reversal of 70067920 is 2976007.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 9290304 + 60777616 = 3048^2 + 7796^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70067927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92182 + ... + 92938.

It is an arithmetic number, because the mean of its divisors is an integer number (2220561).

Almost surely, 2^70067920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70067920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88822440).

70067920 is an abundant number, since it is smaller than the sum of its proper divisors (107576960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70067920 is a wasteful number, since it uses less digits than its factorization.

70067920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 70067920 is about 8370.6582775789. The cubic root of 70067920 is about 412.2617810346.

The spelling of 70067920 in words is "seventy million, sixty-seven thousand, nine hundred twenty".